Proceedings of the FORWIHR Symposium on High Performance Scientific Computing

The present status of numerical simulation of crystal growth processes, especially by the Czochralski technique, is discussed by comparison of numerical and experimental results. It is shown in which cases the convective heat transport in the melt has to be considered in order to give realistic numerical results. Furthermore, examples were presented in which 2-dimensional simulations agree with experiments and cases where a 3-dimensional simulation is necessary. Finally, it will be shown that for a simulation of doping distribution in the crystal, i.e. segregation, the crystal melt interface has to be treated as a "moving boundary".